7.4V 16000mAh Battery for Heated Vests This large-capacity, quick-charge battery pack is specifically designed for heated apparel. When used with 5V USB or 7.4V DC heated vests, it provides up to 10 hours of continuous warmth. As a universal replacement, it is compatible with most 7.4V heating vests on the market, including popular brands like ARRIS, NORSENN, ORORO, Hecusma, and Venustas, and is suitable for both men's and women's heated vests Precise Power Display, No More Guesswork: While traditional indicator lights only provide a rough estimate, our LED digital screen clearly displays the exact remaining battery percentage, accurate to 1%-100%. Whether you're wearing your heated jacket outdoors, using a heated camping chair at the site, or relaxing with a heated blanket at home, you always know exactly how much warmth you have left Ultra lightweight and portable: The Topdot 16000mAh power bank not only has a 60% larger capacity than other models on the market,